Improvement in rotary puddling-furnaces



UNITED STATES PATENT; OFFICE.

SAMUEL DANKS, OF CINCINNATI, OHIO.

'lMP-ROVEMENT lN ROTARY PUDDLlNG-FURNACES.

' Specification forming part of Letters Patent No. 96,206., dated October 26, 1869. I

To all. whom it, may concern.- terminates at an opening in or near the top Be it known that I. SAMUEL DANKS, of Cinof the water, steam, or air casing I, which is cinnati, in the county of Hamilton and State constructed of thin metal, having its edges of Ohio, have invented certain Improvements turned in toward the refining-chamber, which in Rotary Puddling-Furnaces, of which the 1 it entirely surrounds without being ini'mmedifollowing is a'specitication: ate contact with it. Y

My invention consists in the construction The mouth of'the shiftable piece K, which and arrangement of series of pipes for the conis in immediate contactwith the end of the veyance of water, steam, air, or other suitable 1 refining-chamber A farthest removed from the cooling substance close to the passages to grate, is constructed with an annularpipe, I, and from the rotary refining-chamber, and in the edge thereof, the cooling substance beprojecting corners'and surfaces of puddlinging supplied to it through the feed-pipe L. furnaces, and to a water, steam, or air casing The inner conical faces of the ends of the rosurrounding the refining-chamber, for the purpose of reducing the temperature of those parts of the furnace most exposed to intense heat, and also to annular metallic facings attached to the refining-chamber for its protection from excessive heat.

Figure 1 is a longitudinal section of a rotary paddling-furnace having my improvements connected therewith. Fig. 2 is a one-half section and one-half elevation of the fire-bridge, the annularwater-collar,and the steam, water, or air casing as seen from the grate. Fig. 3 is a sectional elevation of the shiftable piece K, the section being taken through the annular pipe I.

A represents the rotary refining-chamber of the puddling-furnace. It consists of a cylinder constructed of suitable refractory metal. Its ends are of the form of truncated cones. B B are rollers, arranged beneath the chamber, which they support while permitting its free r'otation, accomplished by means of gearing. 'The bridge 0 has incased within it a coil of pipes, D, for the conveyance of water, steam, air, or other ,cooling substance. The first return of the coil of pipes D is carried through the arch over the passage from the grate to-the refining-chamber, as shown at J in Fig. 1. This pipe is connected with the spiral pipe F, incased in the annular water, steam, or air collar G, which is secured to the bridge end of the grate a, or about the hot-air passage of which the bridge U forms the lower edge or face. The conically concave face of the annular water, steam, or air collar is of a form adapting it to fit closely the surface of the end of the refining-chamber. Adischargepipe, H, is connected with the last return of the spiral pipe F in the annular collar G, and

annular metal facings L, secured in place by bolts or screws. The outside face of the shiftsteam, water, or air chamber 70. The edges and faces of the opening from the grate to the rotary refining-chamber over the bridge U, and also the ends of the chamber A and movable section of thesmoke-flue, are the parts of the paddling-furnace subjected to the most intense heat, and, consequently, are quickly destroyed.

To prevent the rapid destruction of the exposed parts of the furnace, I have into close proximity with them a series of pipes or confined channels for the conveyance of water, steam, air, or other cooling substance, which flows freely, or may be forced to circulate, through said ducts, that a low temperature may be insured. The current of cooling substance, having passed through the coil in the bridge 0, is conveyed by the pipe J over the opening from the grate a to the. chamber A, into the spiral pipe F in the annular collar G, reducing the temperature of the parts by and through which it passes, and is emptied from the discharge-pipe EI upon the top of the rotary refining-chamber A, over the surface of which it spreads, diminishing its temperature. Finally, the steam or gases evolved from the cooling substance in its passage through the pipes escapes under the edges of the casing I, and the fluid part, sinking to the lowest part of the casing, overflows the same edges and escapes into a suitable receptacle.

A cooling substance, such as water, steam, or air, is introduced into the chamber 70, which is constructed upon the outer face of the shiftable piece K farthest removed from the grate;

tary refining chamber A are covered with the able piece K is protected from the heat by the thence it is conducted by the pipe Z into the furnaces with which the collar is in contact. annular pipe or chamber Z, located in one 2. The Water, steam, or air pipe J, located edge of the'shiftable piece K, and in contact in the arch of the passage from the grate a to with the metallic ring L, or, in the absence the refining-chamber A, substantially as and thereof, With the edge of the refining-chamber for the purpose set forth.

A. The cooling substance is carried off, after 3. The Water, steam, or air casing I, conits passage through the ring Z, by the Wastestructed substantially in the manner and for pipe Z, and discharged into the Water, steam, the purpose herein shown and described.

or air chamber between the casing I and the 4. The annular water, steam, or air pipe Z, rotary refining-chamber A. located in the edge of the shiftable piece K,

The facings L are attached, in a secure manwhich is in immediate contact With'the mouth ner, either to the interior conical ends of of the refining-chamber when a heat is on, as the refining-chamber A, or to the exterior and for the purpose specified.

thereof, by bolts or screws. The facings may, 5. The water, steam, or air chamber is, lo-

for convenience in handling, be constructed cated upon the outside face of the shiftable in sections. They serve as an additional propiece K, as and .for the purpose herein set tection to the ends of the refining-chamber A. forth. I

Each end of the rotary refining-chamber A 6. The annular metallic facings L, secured may be. protected, by an annular collar, G, to the conical ends of the rotary refiningfrom the action of the heat. chamber A, substantially in the manner and I claim as my in vention for the purpose specified.

1. The annular Water, steam, or air collar SAMUEL BANKS and described, for the purpose of preserving Witnesses: a low temperature of one or each of the ends SAMUEL E. CRAWFORD, of the rotary refining-chamber of puddling- G. L. FISHER. 

